I've only caught a few episodes of this, and then stopped even trying to watch after season 1.

Then I read another post here and it basically says the show now has Vampires in it? The show already had some mysticism in it with the whole prophecizing thing, but Vampires?

Can someone quickly sum up all the shenanigans that have been happening since Season 1? The last thing I remember was Garner's character finding a clock and much later that whole section getting wiped out by CIA and some members moved into the real CIA office.

How the heck did they get to Vampires? From what I remember it was a nice action/drama about intelligence operatives.